棉铃虫最喜欢吃棉花,大多数人都不知为什么?大量使用各种农药也不能完全防治。最近我们采用喷洒过磷酸钙溶液的方法进行防治取得很好的防治效果,棉铃虫只所以喜欢吃棉花,是因为棉花棵上幼嫩部分和发杈的地能分泌出草酸和叶酸这两种物质,正在飞翔的棉铃虫蛾子一闻到这种气味,就飞下来定居、产卵、繁殖后代。过磷酸钙之所以能防治棉铃虫,是因为 Cotton bollworms like to eat cotton, most people do not know why? Mass use of various pesticides can not be completely controlled. Recently, we used the method of spraying superphosphate solution for prevention and treatment to achieve good control effect. Cotton bollworm only likes to eat cotton because the young cotton tree and the hair on the tender part of the secretion of oxalic acid and folic acid these two substances As the fly bollworm moth smelled this smell, she flew down to settle down, spawn and breed offspring. The reason why superphosphate can control cotton bollworm, because